mirror of
https://gitlab.com/pulsechaincom/erigon-pulse.git
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64 lines
2.0 KiB
Go
64 lines
2.0 KiB
Go
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// Copyright 2019 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty off
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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// Pruning of the Merkle Patricia trees
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package trie
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import (
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"encoding/binary"
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"fmt"
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"testing"
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"github.com/ledgerwatch/turbo-geth/common"
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)
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func TestOnePerTimestamp(t *testing.T) {
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tp := NewTriePruning(0)
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tr := New(common.Hash{})
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tr.SetTouchFunc(func(hex []byte, del bool) {
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tp.Touch(hex, del)
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})
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var key [4]byte
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value := []byte("V")
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var timestamp uint64 = 0
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for n := uint32(0); n < uint32(100); n++ {
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tp.SetBlockNr(timestamp)
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binary.BigEndian.PutUint32(key[:], n)
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tr.Update(key[:], value, timestamp) // Each key is added within a new generation
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timestamp++
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}
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for n := uint32(50); n < uint32(60); n++ {
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tp.SetBlockNr(timestamp)
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binary.BigEndian.PutUint32(key[:], n)
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tr.Delete(key[:], timestamp) // Each key is added within a new generation
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timestamp++
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}
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for n := uint32(30); n < uint32(59); n++ {
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tp.SetBlockNr(timestamp)
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binary.BigEndian.PutUint32(key[:], n)
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tr.Get(key[:]) // Each key is added within a new generation
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timestamp++
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}
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prunableNodes := tr.CountPrunableNodes()
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fmt.Printf("Actual prunable nodes: %d, accounted: %d\n", prunableNodes, tp.NodeCount())
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if b := tp.PruneTo(tr, 4); !b {
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t.Fatal("Not pruned")
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}
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prunableNodes = tr.CountPrunableNodes()
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fmt.Printf("Actual prunable nodes: %d, accounted: %d\n", prunableNodes, tp.NodeCount())
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}
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